I want my sprites to move along when i side scroll, but I dont know how to do it. when my character reaches the border to start scrolling, he freezes it place and move along with the screen.
Code
import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
/**
* Superclass of all actors.
*
* @author Bertie Wheen
* @version 0.1
*/
public class Erm extends Actor
{
public boolean shouldScroll; //A boolean to determine if scrolling is needed, according to how far left/right across the screen the player is.
public int playerX; //The player's x value
public Erm(){
}
public void act()
{
updateShouldScroll(100, 900); //This should be in the act method so that the shouldScroll boolean is constantly updated.
}
/**
* This method checks the players x position and sets the shouldScroll boolean accordingly.
* @param The x value limits within which scrolling is not required for left/right movement.
*/
public void updateShouldScroll(int minX, int maxX)
{
Background theWorld = (Background) getWorld();
Player player = (Player) theWorld.getPlayer();
playerX = player.getX();
if(playerX <= minX || playerX >= maxX)
{
shouldScroll = true;
}
else
{
shouldScroll = false;
}
if(shouldScroll == true && (playerX >= 900 && Greenfoot.isKeyDown("a")) || (playerX <= 100 && Greenfoot.isKeyDown("d")))
{
shouldScroll = false;
}
}
}
